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Unkown rattle

Discussion in 'A3/S3/Sportback (8P Chassis)' started by lewis1, Aug 2, 2013.

  1. lewis1
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    lewis1 Member

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    Hi I have a 2006 S Line 3 door with 97,000 Miles, since picked up the car there has been a metallic rattle which is quite loud from underneath the car. It occurs when going over rough ground and bumps. Jacked car on axle stands today and nothing is loose underneath (heat shields, brackets etc.). It is like a 'tingling'/hollow sound as if something is loose. Has anyone had this problem as I would like to get to the bottom of it...i have people looking around when driving past. It sounds as if coming from the rear of the car.
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  2. lewis1
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    lewis1 Member

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    I will try get a video this evening of the noise
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  3. Brodster
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    Brodster Shark Performance In Scotland Regional Rep Site Sponsor

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    Could it be the internals of the cat breaking up and rattling away......have seen that before but not on an Audi.
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  4. lewis1
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    lewis1 Member

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  5. DomH
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    DomH Active Member

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    Brake disc backing plate? They do tend to come loose and flap around
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  6. lewis1
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    lewis1 Member

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    I had a play with that and all tight, checked as much as i could on axel stands underneath and nothing making that loose rattling sound i could find, can't have a clue what it could be
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  7. DomH
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    DomH Active Member

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    Very strange! Sounds exactly like a backing plate to me, did you manage to check the coil springs too?
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  8. lewis1
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    lewis1 Member

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    Ill have a closer look tomorrow at the backing plate...as for the springs I have fitted coilovers last week and nothing untoward showed up. Had noise before and after
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  9. Graham89
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    Graham89 Derv Perv

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    I can't view the video unfortunately but check above the back box there is heat shielding that sounds metallicy when loose.
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  10. bennymac
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    bennymac New Member

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    Did you ever find the problem with this ? I have quite a big rattle going over bumps and its not any of the heatshields or backplates. sounds like a bag of spanners are in the boot lol
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  11. Walts2782
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    Walts2782 Member

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    Check a coil spring hasn't broken off just a little and its sat just in the arm of the suspension. If the noise is from the rear I'd certainly give that a look but it'll need jacking up or a nice garage that will put it on a ramp for ya.

    good luck
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  12. DomH
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    DomH Active Member

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    Check the rear shockers, there is a metal collar on the bump stop and they have a habit of working their way loose and rattling against the shocker :)
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  13. T33_BKD
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    T33_BKD Browser

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    I had this exact problem on my 06 3dr s line, it was a piece of the coil spring which had broken off and was resting on the arm of the suspension (as mentioned). seems like alot of people had this issue so i'd start by checking there.
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  14. bennymac
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    bennymac New Member

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    Well done troops took the rear wheel off and searched to find a lovely curly C laying in the suspension arm..... looks like a common fault across the range eh, ours is a 8p 3 door TFSI Quattro am I correct in thinking its lower as standard ? need to try some independents for spring prices now.
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  15. Neilandjoanna
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    Neilandjoanna New Member

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    Have just had exactly the same problem with my 56 plate S Line 2.0Tdi. Done just over 82,000 miles. Am waiting a quote from the local Audi dealer as I can't seem to get S Line springs from anyone else. Has anyone out there had any success getting these elsewhere or is it a search on EBay or Gumtree ?
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  16. Walts2782
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    Walts2782 Member

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    Bought a rear spring from audi parts for about £100 each, Local garage to fit here is £30 a corner.
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